Insulator.



H. A. PHARO & W. SCHAAKE.

INSULATOR.

APPLICATION FILED AUG-l0. I915.

1,249,820. Patented Dec. 11,1917.

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WITNESSES 2 INVENTORS Harry/I. PhQ/O 5r MV/mm Schaa/re BY a 'A'ITORNEYUNIT D ,s ATEs PATENT OFFICE.

HARRY A. PHARO. or wILKINsR'URe. AND WILLIAM SCI-IAAKE, or PITTSBURGH,PEN N- SYLVANIA, AssIeNo s To WESTINGHOUSE ELECTRIC & MANUFACTURING COM-PANY, A CORPORATION OF PENNSYLVANIA.

INsULAToR.

Specification of Letters Patent.

Patented Dec. 11, 1917.

Application filed August 10, 1915. Serial No. 44,725.

To all whom it may concern Be it known that we, HARRY A. PHARO, acitizen of the United States, and a resident of lVilkinsburg, in thecounty of Allegheny and State of Pennsylvania, and l/VILLIAM SCHAAKE, acitizen of the United States, and a resident of Pittsburgh, in thecounty of Allegheny and State of Pennsylvania, have invented a new anduseful Improvement in Insulators, of which the following is aspecification.

Our invention relates to insulators adapted to support electricconductors and cables, and it has special reference to insulators thatare adapted to support conductors at points where the conductors are ledaround corners and where it is now customary to attach the conductors tothe insulators by means of tie wires twisted around the conductorsadjacent to the insulators.

The'object of our invention is to provide an insulator of the aboveindicated character which shall embody means for supporting conductorssecurely without the use of tie wires or other external fastening meansand in which the supporting member may be readily adjusted to anyangular position with reference to the bodymember of the insulator.

In the accompanying drawing, Figure 1 is a plan view of an insulatorconstructed in accordance with our invention, and Fig. 2 is a verticalsectional view of the device shown in Fig. 1, the section being takensubstantially along the line II-II, Fig. 1.

The insulator shown in the drawing consists of a body member 1,preferably of molded insulating material and preferably surrounded by ametallic jacket 2. A screwthreaded central opening 3 is provided withinthe body member 1 for. attachment to the usual supporting pin, and anannular, external depression or groove 4:15 provided about midwaybetween the ends of the insulator.

Adjacent to the groove 1 and near the lower edge of the insulator, is anoutwardly extending fiat flange 5 which may be formed integral with thejacket 2, as shown, or may be formed separately and attached to theinsulator in any convenient manner. The flange 5 serves to support amovable ring or collar 6 which surrounds the body portion 1 and isprovided with an outwardly and upwardly extending curved finger 7. The

curvatures of the finger 7 and of the annular depression 4 are such thatthey cooperate to receive a conductor, the transverse outline of whichis indicated in dotted lines at 8 in Fig. 2. The finger 7 may bestrengthened, as shown, by means of a downwardly-extending projection 9.

At a point removed from the finger 7 the collar or ring 6 is providedwith an enlargement 10 which is perforated to receive a short bolt 11.-The head 12 of the bolt 11 extends beneath the flange 5 and cooperatestherewith to clamp the collar 6 rigidly in any angular position whichmay be selected,

the bolt being provided with a nut 13 which may be loosened to permitangular adjustment of the collar 6 and then tightened to maintain thecollar in its adjusted osition.

When an insulator constructed in the manner shown is used for supportinga conductor at a corner, the insulator is first tightly screwed on thepin and the collar 6 is then so adjusted as to bring the finger 7 to theside ofthe insulator which is engaged by the portion of the conductorthat is bent around it. When the conductor is placed in position, it isheld in the depression 4 of the body member by the finger 7 and cannot Ideparting from the scope of our invention.

For example, the body member of the insulator need not be made of moldedmaterial and the holding finger 7 may extend outwardly to a greater orless extent, as special circumstances may require. It as to beunderstood that our invention comprlses these modifications and allothers which fall within the scope of the appended clalms.

We claim as our invention:

1. An insulating support comprising a body member provlded with alaterally proj ecting annular flange, an outwardly and upwardlyextending finger ad ustably supported upon said flange, and means forclamping the said finger to the said flange in any position to which itmay be ad usted.

2. An insulating support comprlsmg a body member provided with acircumferential conductor-receiving groove, a 'slngle outwardly andupwardly extending finger supported upon the said body member ad aainembcent to the lower edge of said groove and circumferentially adjustablearound said body member, and means for clamping the said finger to thesaid body member in any position to which it may be adjusted.

3. An insulating support comprising a body member having a laterallyprojecting metallic flange, an annular metallic member adjustablyclamped tothe said flange and surrounding the said body member, and anoutwardly and upwardly extending supporting finger carried by the saidannular a. An insulating support comprising a body member having alaterally projecting annular flange adjacent to its lower end, anoutwardly and upwardly extending supporting finger carried by the saidflange and circumferentially adjustable thereon, and means for clampingthe said finger to the flange in any position to which it may beadjusted.

5. An insulating support comprising a body member having a laterallyprojecting flange, a circumferentially adjustable annular member restingupon the said flange and having an outwardly and upwardly extendingsupporting finger, and means for clamping said annular member to saidflange in any position to which it may be adjusted.

6. An insulating support comprising a body member having a laterallyprojecting flange, an annular member adjustably supported upon saidflange and provided with a single outwardlyand upwardly extendingintegral finger to coiiperate with the said body member to form aconductor-retaining support, and means for clamping said ger in anyadjusted position.

7. An insulating support comprising a body member of insulating materialpro .vided with an external casing having a laterally projecting annularflange near its lower end, a circumferentially adjustable ring restingupon'the said flange and provided with an outwardly and upwardlyextending supporting finger, and means for clamping the said ring to thesaid flange in any position to which it may be adjusted.

8. An insulating support comprising a body of insulating material, anexternal casing for the said body provided with an outwardly extendingannular flange, a circumferentially adjustable member resting on thesaid flange and provided with an outwardly and upwardly extendingsupporting finger,

naaaeao and clamping means for securing the said member to the saidflange at any desired single point.

9. An insulating support comprising a body of insulating material, anexterior casing for the said body having a laterally probe adjusted.

11. An insulating support comprising a I body member of insulatingmaterial provided with an external casing having a laterally projectingannular flange adjacent to its lower end and an annular groove adj acentto the said flange, a circumferentially adjustable ring resting upon thesaid flange and provided with an outwardly-extending supporting finger,and means for clamping the said ring to the said flange in any posi tionto which it may be adjusted.

12. An insulating support comprising a body member provided with anannular groove and with an annular flange adjacent to the bottom edge ofsaid groove, a circumferentially adjustable ring resting upon the saidflange and provided with an outwardly-extending supporting finger, andmeans for clamping the said ring to the said flange in any position towhich it may be adjusted.

13. An insulating support comprising a body of insulating materialprovided with an exterior casing having an annular flange near its lowerend, a circumferentially adjustable ring resting upon the said flangeand provided with an outwardly-extending supportin -finger, and meansfor clamping the said rlng to the said flange in any position to whichit may be adjusted.

In testimony whereof we have hereunto subscribed our names this 28th dayof July, 1915.

HARRY A. PHABO. WILLIAM SCHAAKE.

